Castor Oil Emulsion

Question 1

Materials of castor oil emulsion

Answer 1

acacia
purified water
castor oil

Question 2

a dispersion in which the dispersed phase is composed of small globules of a liquid distributed throughout a vehicle in which it is immiscible

Answer 2

Emulsion

Question 3

internal phase

Answer 3

dispersed phase

Question 4

external phase

Answer 4

dispersion medium

Question 5

Emulsions with an oleaginous internal phase and an
aqueous external phase

Answer 5

O/W emulsions

Question 6

Emulsions having an aqueous internal phase and an
oleaginous external phase

Answer 6

W/O emulsions

Question 7

Third phase intended for stabilization

Answer 7

Emulsifying agent

Question 8

Energy input for emulsions

Answer 8

mechanical agitation, ultrasonic vibration, or heat

Question 9

Ranging diameter of dispersed particles

Answer 9

0.1 to 100 um

Question 10

4:2:1 method (4 parts by volume of oil, 2 parts of water
and 1 part of gum)

Answer 10

Continental or Dry Gum Method

Question 11

Continental Method steps

Answer 11

o/w emulsifier is triturated with the oil in a completely dry mortar (rough inner surface)

add two parts of water all at once

triturate continuously until the primary emulsion is creamy white and produces a crackling sound

Question 12

4:2:1 (4 parts by volume of oil, 2 parts of water and 1
part of gum)

Answer 12

English or Wet Gum method

Question 13

Emulsifying agent is triturated with 2 parts of water
à oil is added in portions and triturated

Answer 13

English or Wet gum wmethod

Question 14

useful for the extemporaneous preparation of emulsions from volatile oils or oleaginous substances of low viscosities (not suited for viscous oils - not agitated)

Answer 14

Bottle or Forbes Bottle Methods

Question 15

Steps for bottle or forbes bottle method

Answer 15

In a dry bottle, emulsifying agent and two parts of oil are added

mixture is thoroughly shaken

water is added in portions and shaken after every addition

Question 16

Passing prepared emulsions (by wet or dry gum
method) through a hand homogenizer.

The pumping action of the handle forces the
emulsion through a very small orifice that reduces
the globules of the internal phase to about 5 μm
and sometimes less.

Answer 16

Auxiliary Method

Question 17

Employed when synthetic or non-gum emulsifiers are used

Answer 17

Beaker method

Question 18

Beaker Method

Answer 18

All oil soluble components are dissolved in the oily
phase in one beaker and all water soluble
components are dissolved in the water in a
separate beaker

Question 19

Beaker Method after dissolving components respectively.

Answer 19

heat over water bath
add internal to external phase

Question 20

soaps developed in situ soap method

Answer 20

calcium soaps and soft soaps

Question 21

w/o emulsions that contain certain vegetable oils, such as oleic acid, in combination with
limewater

Answer 21

Calcium Soaps

Question 22

Prepared by mixing equal volumes of oil and limewater

Answer 22

Situ Soap

Question 23

Emulsifying agent in situ soap

Answer 23

Calcium salts

Question 24

contains hydrophilic portion and hydrophobic portion

Answer 24

emulsifying agent

Question 25

categorization of emulsifying agents are based on

Answer 25

HLB

Question 26

HLB of w/o emulsions

Answer 26

3 - 6

Question 27

HLB of o/w emulsion

Answer 27

8 - 18

Question 28

reduces interfacial tension between oil and water phase

Answer 28

emulsifying agent

Question 29

use of castor oil

Answer 29

stimulant laxative

Question 30

synonyms of castor oil

Answer 30

ricinus communis

Question 31

responsible for laxative action in small intestine

Answer 31

ricinoleic acid

Question 32

Why is castor emulsion not recommended for simple constipation?

Answer 32

Violent purgation